diff --git a/subprocess_test_2.py b/subprocess_test_2.py
index 4f75ff6..27ba0ce 100755
--- a/subprocess_test_2.py
+++ b/subprocess_test_2.py
@@ -64,19 +64,3 @@ if __name__ == "__main__":
     )
 
     print("*" * 100)
-    subprocess.Popen(
-        ['sleep', '50'],
-        stdout=subprocess.DEVNULL,
-        stderr=subprocess.DEVNULL,
-        preexec_fn=os.setpgrp  # 让子进程独立，即使当前脚本挂了它也继续运行 for Linux/Unix/MacOS
-    )
-    # for Windows
-    # flags = 0x00000008 | 0x00000200
-    # process = subprocess.Popen(
-    #     ["cmd", "/c", "your_script.bat"],
-    #     stdout=subprocess.DEVNULL,
-    #     stderr=subprocess.DEVNULL,
-    #     creationflags=flags
-    # )
-
-    print("*" * 100)